HP 2500C Series - Manual (Page 158)

Removal and Replacement of Parts (without Calibration) 7-8
Step 4. Slide the ink carriage mechanism along the
carriage rod to the left under the top
cover. This will expose three screws,
previously concealed under the ink
carriage mechanism, that secure the
service station.
Step 5. Unscrew the three screws in the order
shown on the chassis.
Step 6. Remove the service station by sliding it
out. Be careful of connecting cables when
removing the service station.
Step 7. Disconnect the service station connector.